Question 1
True or False: The function f(x) =

is differentiable at x = 0.
◦ true
◦ false
Question 2
Find the derivative of y = tan(cos(x
2)).
◦ sec
2(-sin(2x))
◦ -2x sec
2(cos(x
2)) sin(x
2)
◦ 2x cos(x
2)
◦ sec
2(x
2) cos(x
2) - tan(x
2) sin(x
2)
◦ sec
2(-2x sin(x
2))